Hughes Reservoir Report

Last Updated: December 5, 2025

Hughes, also known as Dam #36, is a federal-owned structure located in Bradley, California, along the Aqua Frias Creek.


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Summary

Built in 1966 by the US Army, this earth-type dam stands at a height of 37 feet and has a maximum storage capacity of 1500 acre-feet. Its primary purposes include fire protection, stock, and serving as a small fish pond, with additional functions such as fish and wildlife habitat, as well as recreational activities.

Managed by the US Army, Hughes Dam has a low hazard potential and a moderate risk assessment rating. Despite its age, the dam is well-maintained, with a regular inspection frequency of 4 years. It features an uncontrolled spillway and has not been modified since its construction. With a historical storage volume of 200 acre-feet and a surface area of 31 acres, Hughes Dam continues to play a crucial role in water resource management and climate resilience in the region.

While not regulated by the state, Hughes Dam remains a key piece of infrastructure for the local community, providing essential water storage and fire protection services. As climate change intensifies, the importance of structures like Hughes Dam in safeguarding water resources and supporting ecosystem health becomes increasingly evident. With its strategic location and multi-functional design, Hughes Dam stands as a testament to the innovative engineering solutions that support both human needs and environmental conservation.

Year Completed

1966

Dam Length

410

Dam Height

37

River Or Stream

Aqua Frias Creek

Primary Dam Type

Earth

Surface Area

31

Hydraulic Height

40

Nid Storage

1500

Structural Height

50

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

50
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.